Intel Core2 Duo

the error or problem is that when I am using PC normally, but after some time it shows anonymous or black lines in front of my monitor and totally get hang and shutoff, the most important thing to be noted is that the fan speed of CPU increases when it get stuck. I searched for this problem and...

Dell optiplex 740-DT: 0PY127-board - Socket-AM2 - Bios: 2.2.2 rev-6 (4-1-2009) - AMD 64 Athlon Orleans 3500 62-watt - 4gb-ddr2, PSU: 305-watt, Win-XP, will upgrade to Win-7 Pro-64 and 8-gb-ddr2 -- What Bios version is needed for a compatible upgrade to AMD 64 X2 Windsor 6000 89-watt. Orleans 90...